[0/6] fix uaf in rq_qos_done_io()

Message

Yu Kuai Sept. 23, 2021, 1:46 p.m. UTC

This patch set tries to fix the uaf when bio_endio() is called from
error path and is concurrent with blk_cleanup_queue().

Yu Kuai (6):
  rq-qos: introduce rq_qos_free()
  blk-wbt: introduce wbt_free()
  io-cost: introduce ioc_rqos_free()
  blk-iolatency: splict blkcg_iolatency_free() from
    blkcg_iolatency_exit()
  blk-ioprio: introduce blkcg_ioprio_free()
  rq-qos: fix uaf in rq_qos_done_io()

 block/blk-iocost.c    |  7 +++++++
 block/blk-iolatency.c |  7 +++++++
 block/blk-ioprio.c    |  7 ++++++-
 block/blk-rq-qos.c    | 12 +++++++++++-
 block/blk-rq-qos.h    |  2 ++
 block/blk-sysfs.c     |  1 +
 block/blk-wbt.c       |  7 +++++++
 7 files changed, 41 insertions(+), 2 deletions(-)